珠江口盆地深水区白云凹陷始新世洼陷结构研究
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摘要
利用新采集的长电缆地震资料及地质、测井和地化资料研究表明,白云凹陷在始新世文昌期由一系列断层控制的半地堑组成,断裂对文昌组沉积的控制作用明显,但晚期白云凹陷的持续沉降以及巨厚的渐新统—中新统地层沉积,掩盖了早期半地堑的形态。断陷期的半地堑控制了湖相烃源岩的分布,对这些半地堑的进一步分析有利于厘清文昌组烃源岩的分布及促进该区的油气勘探。
The structure of Baiyun Sag in the deep-water area of Pearl River Mouth Basin was studied by applying the new long-cable seismic data in combination with the geology, logging and geochemistry data. Baiyun Sag was composed of a series of half-grabens controlled by the faults in the Wenchang Age of Eocene Epoch, and the sediment of Wenchang Formation was controlled by faults obviously in this period. In the Late Eocene Epoch, Baiyun Sag persisted subsiding and deposited the thick strata of the Oligocene-Miocene, which covered the early structure of half-grabens. In the rift period, the half-grabens controlled the distribution of lacustrine source rocks. Further analysis to half-grabens is favorable to reveal the distribution of source rocks in Wenchang Formation and improve the petroleum exploration in this area.
The structure of Baiyun Sag in the deep-water area of Pearl River Mouth Basin was studied by applying the new long-cable seismic data in combination with the geology, logging and geochemistry data. Baiyun Sag was composed of a series of half-grabens controlled by the faults in the Wenchang Age of Eocene Epoch, and the sediment of Wenchang Formation was controlled by faults obviously in this period. In the Late Eocene Epoch, Baiyun Sag persisted subsiding and deposited the thick strata of the Oligocene-Miocene, which covered the early structure of half-grabens. In the rift period, the half-grabens controlled the distribution of lacustrine source rocks. Further analysis to half-grabens is favorable to reveal the distribution of source rocks in Wenchang Formation and improve the petroleum exploration in this area.
引文
[1]陈红汉,刘建章,王存武,等.珠江口盆地白云凹陷北坡番禺低隆起流体包裹体分析报告.中海石油(中国)有限公司深圳分公司技术部,2003.
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[7]代一丁,庞雄.珠江口盆地珠二凹陷的石油地质特征[J].中国海上油气(地质),1999,13(3):169-173.Dai Yiding,Pang Xiong.Petroleum geological characteristics of ZhuⅡDepression,Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),1999,13(3):169-173.
[8]孙珍,庞雄,钟志洪,等.珠江口盆地白云凹陷新生代构造演化动力学[J].地学前缘,2005,12(4):489-498.Sun Zhen,Pang Xiong,Zhong Zhihong,et al.Dynamics of Tertia-ry tectonic evolution of the Baiyun Sagin the Pearl River Mouth Basin[J].Earth Science Frontiers,2005,12(4):489-498.
[9]李平鲁.珠江口盆地构造结构及演化[J].中国海上油气(地质),1989,3(1):11-18.Li Pinglu.Tectonic structure and evolutionin Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),1989,3(1):11-18.
[10]庞雄,陈隽,戴一丁,等.珠江口盆地白云西一开平凹陷油气聚集及勘探目标研究[J].中国海上油气(地质),1995,4(9):237-245.Pang Xiong,Chen Juan,Dai Yiding,et al.Study on hydrocarbon accumulation and explorationtargetsin West Baiyun-Kaiping Sag of Pearl River Mouth Basin[J].China Offshore Oil and Gas(Ge-ology),1995,9(4):237-245.
[11]龚再升,李思田,谢泰俊,等.南海北部大陆边缘盆地分析与油气聚集[M].北京:科学出版社,1997:63-122.Gong Zaisheng,Li Sitian,Xie Taijun,et al.Continental margin basin analysis and hydrocarbon accumulation of the northern South China Sea[M].Beijing:Science Press,1997:63-122.
[1]庞雄,陈长民,朱明,等.珠江深水扇系统及油气资源研究成果报告.中海石油(中国)有限公司深圳分公司技术部,2006.
[1]陈长民,施和生,许仕策,等.珠江口盆地(东部)第三系油气藏形成条件[M].北京:科学出版社,2003:1-121.Chen Changmin,Shi Hesheng,Xu Shice,et al.The conditions of hydrocarbon accumulation of the Tertiary petroleum systemin the Pearl River Mouth Basin[M].Beijing:Science Press,2003:1-121.
[2]茹克.裂陷盆地的半地堑分析[J].中国海上油气(地质),1990,4(6):1-10.Ru Ke.Analyse of half-grabenin rift-subsidence basin[J].China Offshore Oil and Gas(Geology),1990,4(6):1-10.
[3]庞雄,申俊,袁立忠,等.南海珠江深水扇系统及其油气勘探前景[J].石油学报,2006,27(3):11-21.Pang Xiong,Shen Jun,Yuan Lizhong,et al.Petroleum prospect in deep-water fan system of the Pearl River in the South China Sea[J].Acta Petrolei Sinica,2006,27(3):11-15.
[4]彭大钧,庞雄,陈长民,等.从浅水陆架走向深水陆坡———南海深水扇系统的研究[J].沉积学报,2005,23(1):1-11.Peng Dajun,Pang Xiong,Chen Changmin,et al.From shallow-water shelf to deep-water slope—The research of deep-water fan systems in South China Sea[J].Acta Sedi mentologica Sinica,2005,23(1):1-11.
[5]Pang Xiong,Yang Shaokun,Zhu Ming,et al.Deep-water fan sys-tems and petroleumresources on the northern slope of the South China Sea[J].Acta Geological Sinica,2004,78(3):626-631.
[6]彭大钧,陈长民,庞雄,等.南海珠江口盆地深水扇系统的发现[J].石油学报,2004,25(5):17-23.Peng Dajun,Chen Changmin,Pang Xiong,et al.Discovery of deep-water fan systemin South China Sea[J].Acta Petrolei Sini-ca,2004,25(5):17-23.
[7]代一丁,庞雄.珠江口盆地珠二凹陷的石油地质特征[J].中国海上油气(地质),1999,13(3):169-173.Dai Yiding,Pang Xiong.Petroleum geological characteristics of ZhuⅡDepression,Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),1999,13(3):169-173.
[8]孙珍,庞雄,钟志洪,等.珠江口盆地白云凹陷新生代构造演化动力学[J].地学前缘,2005,12(4):489-498.Sun Zhen,Pang Xiong,Zhong Zhihong,et al.Dynamics of Tertia-ry tectonic evolution of the Baiyun Sagin the Pearl River Mouth Basin[J].Earth Science Frontiers,2005,12(4):489-498.
[9]李平鲁.珠江口盆地构造结构及演化[J].中国海上油气(地质),1989,3(1):11-18.Li Pinglu.Tectonic structure and evolutionin Pearl River Mouth Basin[J].China Offshore Oil and Gas(Geology),1989,3(1):11-18.
[10]庞雄,陈隽,戴一丁,等.珠江口盆地白云西一开平凹陷油气聚集及勘探目标研究[J].中国海上油气(地质),1995,4(9):237-245.Pang Xiong,Chen Juan,Dai Yiding,et al.Study on hydrocarbon accumulation and explorationtargetsin West Baiyun-Kaiping Sag of Pearl River Mouth Basin[J].China Offshore Oil and Gas(Ge-ology),1995,9(4):237-245.
[11]龚再升,李思田,谢泰俊,等.南海北部大陆边缘盆地分析与油气聚集[M].北京:科学出版社,1997:63-122.Gong Zaisheng,Li Sitian,Xie Taijun,et al.Continental margin basin analysis and hydrocarbon accumulation of the northern South China Sea[M].Beijing:Science Press,1997:63-122.
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